Improvement in yarn-beams for looms



L. 1'. KNowLEs.

Yarn-Raam for Looms."

910.159,68@ Patented Feb.9,1875,

ffy-5.

THE GRAPHIC C0.PHOTG LITE-.39 & 4V PARK PLAUEN-Y.

PATENT Friong.

LUCIUS J. KNOWLES, OF WORCESTER, MASSACHUSETTS.

IMPROVEMENT IN YARN-BEAMS FOR LOOMS.

Specification forming part of Letters Patent No. 159,686, dated February 9, 1875; application filed January 28, 1875.

To all whom it may concern:

Be it known that I,'LUo1Us J. KNoWLns, of the city and county of Worcester, and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Yarn- Beams for Looms 5 and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming apart of this specification, andV in which-.`

Figure l represents a side view of one of my improved yarnbeams for looms. Figs. 2 and 3 representilongitudinal sections, as indicated by dotted'lines A B and O D. Fig. 4 represents an end view of the beam. Fig. 5 represents a cross section of the beam, out through the center, and Fig. 6 represents an inside view of one of the cast-iron heads, as will be hereafter explained.

To enable those skilled in the art to which my invention belongs to make and use the sarie, I will proceed to describe it more in detai f Combined wood and iron yarn-beams for looms, as constructed previous to my invention, were found very objectionable. The yarnsupporting part A of the beam was provided with iron heads B, having smooth inner sides to flt against the ends of the body part A, and were secured thereto by means of jointbolts, the nuts being dropped into holes cut in the body part A, into which the bolts were screwed through holes in the iron heads and holes bored longitudinally into the ends of the body part A, and, as the nuts had to be dropped down some distance below the outer surface of the body of the beam, the bolts were brought very near the journal'G of the beam, which required them to be turned very tight in order to hold the heads with any degree of rmness, and l even then constant jarring of the loom, in connection with the friction-straps arranged to fit into the flat grooves a of the heads, caused the heads to work loose and spring, thereby allowing the threads to work down between the ends of the body A and its heads, so that when the joint-bolts were turned up to tighten the heads threads were liable to be caught between the heads B and the ends of the body A, thereby rendering it impossible to weave 01?' the entire yarn from the beam, and involving quite a loss in consequence of this waste of yarn. Still another and more serious 0bjeetion exists to the use of such old beams. If one of the joint-bolts happens to strip its nut-thread while it is being turned up to keep the head tight during either the process of filling the beam with yarn, or that of weaving it oif, there is no Way of repairing the brealrage until the yarn is removed .from the beam, and the attempt to weave it oi` would often be impossible, While, under the most favorable circumstances, the operation would be attended with great dieulty, owing to the unequal tension of the selvage-threads upon the end of the beam where the breakage of the beam-head fastening had occurred. Those accustomed to superintend the operation of weaving are Well aware of the great and serious evils and losses which result to manufacturers from this'cause.

To remedy the foregoing and other objections which might benamed to the use of the old style of loom-beam is the object of my present invention. The iron heads B are made or cust with projections f, the outer edge of which,

when the beam is finished, comes tlush or even Y- with the outer surface of the body part A of the beam, said projections f iitting into corresponding' notches or recesses out in the ends of the beam, as indicated in Fig. 3. J oint bolts for fastening the heads t0 the body part are discarded entirely, and long rods b are employed, and which rods extend the entire length of the body part A, with their ends eX- tending through the heads B sufficiently far to receive theholding-nuts e, which are screwed upon the projecting ends of said rods, as fully indicated in Figs. 2 and 4. The rods b lie in grooves cut in the outer surface of the body part A, their outer edges coming about flush with the outer surface thereof. It will be observed that the rods b pass through holes in the heads B between the projections f.

The body part A may be made and secured to the journal C in the usual manner.

From lthe foregoing description it will be seen that by screwing up the nuts e upon the rods b the heads B can be securely fastened to the body part A, and that, too, by pressure applied nearly on a line with the outer surfaceJ of the body part A, and that in case one ofthe rods gives out or breaks, or its thread be stripped while in use either in filling or while the yarn is being Woven off, the rod may be removed and repaired and, then inseited, or a new thread may be out on its end without its being removed.

It will also be observed that the projections f and the rods b will form a support to and prevent threads working down between the ,head and the ends of the body part A in case p the heads happen to become loosened. The projections f serve the further purpose of rendering the connections of the heads B with the body part A more rigid, secure, and rm. 

